Honeywell CM927 manual

Honeywell CM927
8.5 · 12
PDF manual
 · 18 pages
English
manualHoneywell CM927

CM927 - User Guide

7 day Wireless Programmable Room Thermostat

with LoT Technology

Description

The Honeywell CM927 is a ‘wireless’ programmable room thermostat designed to
control your heating system efficiently, providing comfortable temperatures when you
are at home and energy savings when you are away. With ‘wireless’ communication
there is no need to provide a wired connection between the thermostat and boiler.
The following instructions explain how to set up, program and operate your
Honeywell CM927 Programmable Room Thermostat.

Features

Wireless connection to the boiler allows you to mount the Chronotherm in your
room without decor disruption
Armchair programming feature lets you program your Chronotherm while
resting comfortably in your armchair
Ergonomic User Interface features an OK-button making the CM927 very
easy to use so you always stay in control.
LoT Technology provides informative ‘on-screen’ feedback and operational
assistance to the user.
Extra Large LCD (Liquid Crystal Display) Screen with Backlight provides
added user friendliness and clearer viewing – even in the dark.
7-day heating program lets you set the CM927 independently for each day of
the week to match your lifestyle, whilst maximizing energy savings.
6 independent temperature levels per day lets you set any 6 temperatures you
require (from 5 to 35°C) so you can enjoy economical comfort every day
Holiday button saves energy by letting you reduce the temperature for 1 to 99
days while you are away from home, resuming normal operation on your return.
Party button lets you temporarily maintain (or adjust) the current temperature for 1
- 23 hours. Useful when you have guests or leave the house for a short period.
Day Off button copies Sunday’s program into any other day of the week, so that
you can make the CM927 follow this program if you have a day or days off.
Automatic Summer/Winter Time Change will adjust the clock automatically for
‘Daylight Saving Time’.
Built-in Memory holds the user program indefinitely so that it is never lost –
even if you remove the batteries.
Optimum Start option is an advanced feature which ensures that the optimum
temperature conditions are achieved at the required times (option set by your
installer).
Honeywell Control Systems Ltd.
Arlington Business Park,
Bracknell
Berkshire
RG12 1EB
Technical Help Desk: 08457 678999
www.honeywelluk.com
50039989-003 A
© 2009 Honeywell International Inc.
...an explanation for householders
A programmable room thermostat is both a programmer and a room
thermostat. A programmer allows you to set ‘On’ and ‘Off’ time periods to suit
your own lifestyle. A room thermostat works by sensing the air temperature,
switching on the heating when the air temperature falls below the thermostat
setting, and switching it off once this set temperature has been reached.
So, a programmable room thermostat lets you choose what times you want the heating to be on, and
what temperature it should reach while it is on. It will allow you to select different temperatures in your
home at different times of the day (and days of the week) to meet your particular needs.
Turning a programmable room thermostat to a higher setting will not make the room heat up any faster.
How quickly the room heats up depends on the design of the heating system, for example, the size
of boiler and radiators.
Neither does the setting affect how quickly the room cools down. Turning a programmable room thermostat
to a lower setting will result in the room being controlled at a lower temperature, and saves energy.
The way to set and use your programmable room thermostat is to find the lowest temperature settings
that you are comfortable with at the different times you have chosen, and then leave it alone to do its job.
The best way to do this is to set low temperatures first, say 18°C, and then turn them up by one degree
each day until you are comfortable with the temperatures. You won’t have to adjust the thermostat
further. Any adjustments above these settings will waste energy and cost you more money.
If your heating system is a boiler with radiators, there will usually be only one programmable room
thermostat to control the whole house. But you can have different temperatures in individual rooms
by installing thermostatic radiator valves (TRVs) on individual radiators. If you don’t have TRVs, you
should choose a temperature that is reasonable for the whole house. If you do have TRVs, you can
choose a slightly higher setting to make sure that even the coldest room is comfortable, then prevent
any overheating in other rooms by adjusting the TRVs.
The time on the programmer must be correct. Some types have to be adjusted in spring and autumn
at the changes between Greenwich Mean Time and British Summer Time.
You may be able to temporarily adjust the heating programme, for example, ‘Override’, ‘Advance’ or
‘Boost’. These are explained in the manufacturer’s instructions.
Programmable room thermostats need a free flow of air to sense the temperature, so they must not be
covered by curtains or blocked by furniture. Nearby electric fires, televisions, wall or table lamps may
prevent the thermostat from working properly.

WHAT IS A PROGRAMMABLE ROOM THERMOSTAT?

®

View the manual for the Honeywell CM927 here, for free. This manual comes under the category thermostat and has been rated by 12 people with an average of a 8.5. This manual is available in the following languages: English. Do you have a question about the Honeywell CM927 or do you need help? Ask your question here

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Question and answer

Number of questions: 19
H
Hans KoevoetOctober 22, 2022

Despite new batteries, I have poor display. Numbers and letters that partially disappear. It hasn't fallen! Or is it simply out of power?

Despite new batteries, I have poor display. Numbers and letters that partially disappear. It hasn't fallen! Or is it simply o...
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This message has been automatically translated
H
Hugo April 25, 2023

The green OK button does not seem to function. I am able to access the blinking date but cannot proceed from the "date ok" stage.

The green OK button does not seem to function. I am able to access the blinking date but cannot proceed from the "date ok" st...
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This message has been automatically translated
E
Etienne LeclereAugust 20, 2023

The indications of my thermostat are only partially displayed. Therefore, you can no longer read what is shown on the thermostat.

The indications of my thermostat are only partially displayed.
Therefore, you can no longer read what is shown on the thermos...
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This message has been automatically translated
M
Martin Hambleton August 27, 2023

The display is not showing all characters. Can this be fixed or do I need a new unit?

The display is not showing all characters. Can this be fixed or do I need a new unit?
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M
MargaretNovember 19, 2021

Why are parts of the numbers on the display missing? I have replaced the battery but there is no change.

This message has been automatically translated
K
kevin quigginJanuary 2, 2021

Hello, should the LCD on my CM927 Room Thermostat be lit at all times or does it only light up when a slider or button is moved or pushed? It was installed 4 years ago and works fine but difficult to see the display without touching it. Thank you

R
Roger MayOctober 12, 2022

When programming, I set time 1 at 7am and I also set the temp. This is the start time, please can somebody tell me when the boiler will go off, is this the time 2?

I
Iva December 26, 2023

Hi! We have 2 such screens at home and both of them have this problem that some of the numbers and letters are not seen. Changing batteries does not help. Also in one room the temperature cannot be lowered as desired - heating is on maximum although screen settings are on 18 degrees.

Hi! We have 2 such screens at home and both of them have this problem that some of the numbers and letters are not seen. Chan...
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T
TessaDecember 7, 2022

Ok button doesn’t work after setting the program time function

Ok button doesn’t work after setting the program time function
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The Honeywell CM927 thermostat is a digital programmable device designed for use in residential heating systems. It allows users to easily control the temperature settings in their homes to ensure comfort and energy efficiency. The CM927 features a clear and easy-to-read display, allowing users to view and adjust the temperature with ease. Its simple interface and intuitive controls make it user-friendly for individuals of all ages. This thermostat offers a range of programmable settings, allowing users to create heating schedules that fit their lifestyle. Whether it's adjusting the temperature for different times of the day or different days of the week, the CM927 enables users to tailor their heating to their specific needs. With its wireless capabilities, the CM927 can be controlled remotely, adding convenience and flexibility. Users can easily adjust the temperature settings from any room in the house, ensuring they come home to a comfortable environment. Designed with energy efficiency in mind, the CM927 offers a variety of features to help users save on their heating costs. These include adaptive start, which ensures the desired temperature is reached at the scheduled time, and open window detection, which automatically lowers the temperature if a dramatic drop is detected. Overall, the Honeywell CM927 thermostat provides a reliable and convenient way to control the heating in a home. Its programmable features, wireless capabilities, and energy-saving options make it a practical choice for homeowners looking to optimize their comfort and reduce their energy consumption.

General
BrandHoneywell
ModelCM927
Productthermostats
LanguageEnglish
FiletypeUser manual (PDF)

Can't find the answer to your question in the manual? You may find the answer to your question in the FAQs about the Honeywell CM927 below.

Where is the best location to place the thermostat?

The best place for the thermostat is the room where you spend the most time, in many cases the living room or kitchen. Place the thermostat about one and a half metres above the floor, not in the sun and not on an outside wall.

What is the dead band of a thermostat?

If your thermostat has a dead band, your installation is, as it were, 'at rest'. The thermostat only switches on when, for example, the difference deviates more than 2˚C from the set room temperature.

What is the ideal room temperature?

Most people find that the ideal room temperature is between 19 and 22 degrees Celsius.

How do I change the temperature on my Honeywell CM927 thermostat?

Press the up and down arrows on the thermostat's display to adjust the desired temperature.

How can I program my thermostat to follow a specific schedule?

Navigate to the programming menu by pressing the "Menu" button, then select the desired days and time slots to set the appropriate temperature settings.

My thermostat is displaying a low battery warning. How do I replace the batteries?

Locate the battery compartment cover at the bottom of the thermostat, slide it open, and replace the old batteries with new ones, ensuring correct polarity.

I want to temporarily override the programmed schedule and manually control the temperature. How can I do that?

Press the "Override" button on the thermostat to enter manual mode and adjust the temperature manually. It will revert to the programmed schedule after a set period or when you press the "Override" button again.

Can I access the thermostat remotely using my smartphone?

Yes, you can control your CM927 thermostat remotely by installing Honeywell's Total Connect Comfort app on your smartphone and connecting it to your thermostat via Wi-Fi.

Is the manual of the Honeywell CM927 available in English?

Yes, the manual of the Honeywell CM927 is available in English .

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